WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Dropbox - Online Sync and File Sharing
Send Anywhere - Send whatever you want, wherever you want
Microsoft OneDrive - Secure access, sharing & file storage
Wormhole.app - Wormhole lets you share files with end-to-end encryption and a link that automatically expires.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.